Climate of Middle Illinois. 



77 



From west 20: 



Clematis Pitcheri. 

 Anemone decapetala. 

 Nasturtium sinuatum. 

 Psoralea tloribunda. 

 Petalostemon violaceum. 

 Petalostemon candidum. 

 Amorpha canescens. 

 Ly thrum alatum. 

 Solidago missouriensis. 

 Chrysopsis villosa. 



From northwest 4: 



Viola delphinifolia. 

 Artemisia ludoviciana. 



From north 1 : 

 Equisetum palustre. 



Echinacea angustifolia. 

 Helianthus rigidus. 

 Androsace occidentalis. 

 Mimulus Jamesii. 

 Gerardia grandiflora. 

 Verbena bracteosa. 

 Lithospermum angustifolium. 

 Oxybaphus nyctagineus. 

 Amarantus blitoides. 

 Equisetum laevigatum. 



Troximon cuspidatum. 

 Stipa spartea. 



There are 49 species that extend eastward only to Ohio. Those 

 marked * occur in the southern Alleghannies, but do not reach those 

 mountains in the latitude of Illinois. 



From southeast may come 5: 



*Aster Shortii. 

 Solidago Riddellii. 

 *Silphium perfoliatum. 



From south 20: 



Isopyrum biternatum. 



Thelypodium pinnatifidum. 



Hypericum sphserocarpum. 

 *Ptelea trifoliata. 

 *Baptisia leucantha. 

 *Baptisia leucophsea. 



Spermacoce glabra. 

 *Vernonia lasciculata. 



Silphium lacinlatura. 

 *Silphium terebinthaceura. 



From southwest 10: 



Ammannia coccinea. 

 Silphium integrifolium. 

 Helianthus grosseserratus. 

 Verbesina helianthoides. 

 Prenanthes aspera. 



From west 4: 



Prenanthes racemosa, 

 Cuscuta glomerata. 



*Prenanthes crepidinea. 

 *Fraxinus quadrangulata. 



Coreopsis aristosa. 



Cacalia tuberosa. 

 *Ruellia ciliosa. 



Verbena stricta. 



Onosmodium molle. 



Lithospermum latifoliura. 

 *Gentiana pubera. 



Acerates longifolia. 



Carex crus corvi. 



Eragrostis pectinacea. 



Conobea multifida. 

 Seymeria macrophylla. 

 Asclepias Sullivantii. 

 Diarhena americana. 

 Montelia tamariscina. 



Scilla Fraseri. 

 Equisetum robustum. 



